Division 3.2.1.4
Applicable test procedures:
| Pressure test | section 4.2 |
| External leakage test | section 4.3 |
| Endurance test | section 4.4 (with 6 000 operation cycles for manual valves with 20 000 operation cycles for automatic valves) |
| Corrosion resistance | section 4.6, only for metallic parts, only for equipment outside of the gas tight housing |
| Resistance to dry-heat | section 4.7, only for non-metallic parts |
| Ozone ageing | section 4.8, only for non-metallic parts |
| Temperature cycle test | section 4.9, only for non-metallic parts |
| Seat leakage test | section 4.12 |